Safety door for freight cars



'z. SLAWINSKI.

SAFETY DO0R FOR FREIGHT CARS.

APPLICATION FILED OCT. 25, I920- Patented Feb. 7, 1922.

ATTORNEYS IN VE N TOR Z. SLAWINSKI.

SAFETY DOOR FOR FREIGHT CARS.

APPLICATION FILED OCT. 25, 1920.

1,406,095 Patented Feb. 7, 1922.

2 SHEETSSHEET 2.

511?..5 A "1 a 4 25 R I //d/ ;/z L 45 ]4 4 I 6' I INVENTOR Y M v ATTORNEYS 'Be it known that I, Zreivr ENT, Q L B- zYommr snawmsxr, or soumamamrmrn, EW JERSEY. I-. 1:

shampoos on, FREIGHT CARS.

To all whom it may concern:

, UNT 'SnAwmsKI', a citizen of Poland, andresident of South Plainfield, in the county of Middlesex and State of New Jersey, have invented certain new and useful Improvements in Safety Doors for Freight Cars, of which the following is a specification.

The main object of this invention is the provision of a safety lock for freight car doors, in order to prevent the numerous and frequent thefts prevalent in railroad yards and on side tracks owing to the failure of the looks at present used to defy the manipulations of burglars.

The above and other objects will become apparent in the description below, in which like characters of reference refer to likenamed parts in the drawings.

Referring briefly to the drawings, Fig. 1 is a perspective view of a freight car, illustrating the application of my lock.

Fig. 2 is a diagrammatic, fragmentary side elevational view of a portion of said car, illustrating the means of opening the door lock of said car.

Fig. 3 is an enlarged detail view of the operatingmechanism of'my lock, the latter being in closed position.

Fig. 4: is a cross-sectional view taken on the line 44 of Fig. 3.

Fig. 5 is a cross-sectional View taken on the line 5--5 of Fig. 3.

Fig. 6 is an enlarged detail view of the operating mechanism of my-lock, the latter being in open position.

Referring now in detail to the drawings, the numeral 1 represents the side walls of a freight car and 2 the entrance to the interior thereof, in which the door 3 is slidably mounted on a runway 35. A- plate 4 is attached to the door 3 as shown, and an upwardly pointing hooked member 5 is rigid with the upper end of said plate, while a T-shaped member 7 is ri id with the lower end of said plate, 'both 0% said members extending beyond the edge of the door. The hook 5 provides a recess 6, and the T-shaped member 7 provides recesses 8 and 9. A supporting plate 10 is attached to the car wall adjacent the doorway, and a bearing plate 11 is mounted upon pins 11 spaced parallel to the plate 10. Spaced apart 'pins 12 extend between said plates 10 and 11 and provide pivots for the sgport of levers 19 having converging hook vends 20 adapted r Specification of Letters Patent. ,j'pat nt d Applioation flle 'd october 25, i92oj Serial No..4 1 9,1 96.

7, v to engag'ethe member 7 in the recesses Sand 9 A 'pin or sh'a'ft'13', having a squaredpor t1on'13 extending beyond the outsideoffthe car wall, is pivotally mounted betweenthe plates 10 and 11, and a link 14 is rigidly "at tached thereto. A plate 21 is attached by means of pins 21 to the plate 10, at a dis tance therefrom, and a substantially elliptical cam 18 is pivotally mounted at 17 between said plates. A link 16 is rigidly at tached to said cam, and connected through another link 15 to the link 1/1.

A guide bar 22 limits the outward lateral movement of the levers 19. A coiled spring 23 is attached to both levers 19 and tends to draw'them together. A vertical rod 25 is slidabl mounted in recesses provided in a pair of horizontal guides 26, the lower extremity of said rod being curved in the form of a hook and engagin a hole 24 in the upper lever 19. A mem er 28 is rigid with said rod, and is pointed at the lower end at 29, said end being adapted to engage the hook 5 in the recess 6. I

With the parts in the relative positions shown in Fig. 3, the door'being locked, the same may be opened if the shaft 13 is rotated in a counter-clockwise direction, for the cam 18 will then cause the levers 19 to separate, withdrawing the lever ends 20 from the recesses 8 and 9, and at the same time withdrawing the member 29 from the recess 6. Therefore the door 3 may be withdrawn, the parts bein then in the relative positions shown in %ig. 6. Y

A key having a socket adapted to grip the squared end l3 of the shaft 13 may be used to turn the shaft, and I have provided additional security to the look by having a cover 31 pivotally mounted adjacent the keyhole 30' and adapted to be swung into position to conceal the hole 30. A thumb screw 33 may be screwed into a recess 34 and thereby retain the cover in locked position. 1

I claim:

1. A look for sliding doors comprising a two armed keeper having recessed arms,'a

lock plate, a pair of opposed levers pivoted thereon, said levers being engageable with the recesses of one arm, a detent operable by one of said levers engageable with the recess of the other arm, a spring drawing said levers towards each other, a cam journalled on said plate between said levers, a lever for actuating said a key operated lever keeper plate attached to the door, a pairoff oflset arms .extendingheyondthe edge of the door said arms being in, a vertical plane,

a recess 1n the upper of said arms open at its upper-edge, recesses-in both edges of the lower arm, a plate on the wall adjacent the d a. pa r o e er p t Sa p said lever having inturned ends engageable in the. recesses of said lower arm, spring con- 4 7 V v I i V straining means for sa1d levers, a cam between said levers rotatably mounted in the last named late, a vertically slida'ble detent mounts on; the wall engageable in the recess of said 'iipper arm, connections between one of said levers and Said detent, and'key' operated means for actnating'said cam, said means :be ng at a'po1nt remote from the axis ofthe cam.

Signed at New 'Yorlg'in the county of New York and State of New Y0rk,'this 11th day of October, A. D,.- 1920. I I v i ZYGMUNT siiAvvmsiii. 

